Sioux City to Denver (SUX-DEN): nonstop flights and who flies them

United Airlines flies nonstop between Sioux City (SUX) and Denver (DEN), roughly 19 times a week. With United Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. United Airlines fly the route nonstop in 2LNR's schedule data; the timetable and the reverse direction are below.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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19
Nonstop flights a week
466 mi
Nonstop distance
Free
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Sioux City to Denver flight schedule

Scheduled nonstop departures for SUX to DEN, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Sioux City (SUX) to Denver (DEN)
Date Flight Airline Departs SUX Arrives DEN Duration Aircraft
UA 5097United Airlines18:3519:291h 54mCR2
UA 5042United Airlines11:3012:241h 54mCRJ
UA 5097United Airlines18:3519:291h 54mCR2
UA 5042United Airlines11:3012:241h 54mCRJ
UA 5097United Airlines18:3519:291h 54mCR2
UA 5083United Airlines18:4319:371h 54mCRJ
UA 5042United Airlines11:3012:241h 54mCRJ
UA 5097United Airlines18:3519:291h 54mCR2
UA 5083United Airlines18:4319:371h 54mCRJ
UA 5097United Airlines18:3019:241h 54mCR2
UA 5042United Airlines11:3012:241h 54mCRJ
UA 5097United Airlines18:3519:291h 54mCR2
UA 5083United Airlines18:4319:371h 54mCRJ
UA 5042United Airlines11:3012:241h 54mCRJ
UA 5097United Airlines18:3519:291h 54mCR2
UA 5083United Airlines18:4319:371h 54mCRJ

Showing all 16 scheduled SUX to DEN departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every SUX to DEN date on the interactive map

The full SUX to DEN nonstop schedule

United Airlines fly the route nonstop in 2LNR's schedule data. This page carries the full SUX to DEN nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See real availability

Confirmed upgrade and award seats on each SUX to DEN departure, checked against live inventory so you know what is open before you book.

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Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SUX to DEN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Sioux City to Denver nonstop

Carriers operating SUX to DEN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See SUX to DEN on the interactive map →

Frequently asked questions about SUX to DEN

How far is Denver from Sioux City?
SUX to DEN covers about 466 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from SUX to DEN?
United Airlines is currently the only airline flying SUX to DEN nonstop. None of them is a carrier 2LNR reads inventory for, so this page carries the SUX to DEN schedule rather than a space claim.
How many flights a week are there from SUX to DEN?
About 19 nonstop flights a week run between Sioux City and Denver in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SUX to DEN depart?
Scheduled SUX to DEN nonstops in the next 7 days with service leave between 11:30 and 18:43, local time at Sioux City. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Does 2LNR show upgrade or award space on SUX to DEN?
Not on this route: none of United Airlines is a carrier 2LNR reads inventory for. The page carries the full SUX to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full SUX to DEN nonstop schedule

Every scheduled departure on this route, with who flies it. On the routes 2LNR does read inventory for, upgrade and award space shows by date, the next 14 days free on every product and the full horizon on Pro.

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